Berkshire Hathaway (NYSE: BRK-A) (NYSE: BRK-B) recently held its annual meeting, which included hours of shareholder Q&A with CEO Warren Buffett and his right-hand man Charlie Munger. While Buffett is obviously the star of the show, Munger is known for his matter-of-fact quotes on issues that are important to the company's investors.With that in mind, here are three things Charlie Munger said at this year's meeting that investors need to hear.Shareholders raised several questions about Berkshire's succession plan, and what should be expected after Buffett and Munger are no longer around.